AC Owners Club Forum > Mk IV, Superblower, CRS and other Continuation Cars Forum

Cobra MkIV rear shock lower ball joint assembly

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MkIV Lux:
Hi guys,
I need to replace the lower ball joints (maybe called differently in proper mechanical engineering language) of the rear Koni shocks on my 1993 MkIV (AKL1417).
The attached pic of bad quality faintly shows the components.. After cleaning 4 components are revealed sitting in the main plain metal extension of the shock:
- 1 outer ring (with inner side concave) held in place by 2 clips fitting into grooves
- 1 inner ring (with outer face convex) (can be put in place sideways into the outer ring)
The main bolt goes through the inner ring and has each side a cylindrical spacer (featuring a small lip one side) to hold the shock in the middle of the suspension arm pickup.

If anybody has replaced this assembly, I would be delighted to get feedback particularly on sourcing of the parts.
Attached also a schematic drawing (not to scale) showing the assembly.

mans thanks in advance
Constant

B.P.Bird:
Constant,
I cannot answer the specific question - obviously you will have tried Koni sources, but the distance pieces, as you describe them, look just like the distance pieces that come with spherical bearings (Rose Joints.) Maybe the spherical pieces you need are also to be found associated with these readily available bearings ?
It does seem unlikely that Koni would make their own version if something was available off the shelf ?
Good luck with the search
Barrie

MkIV Lux:
Hi Barrie,
Indeed I have tried KONI but without result.
The spacers look like the ones on this rose joint assembly (yellowish spacer), however are thinner. Once I'll have found the inner two rings, I can see to find appropriate length spacers, depending on the width of the inner ring.
Thanks
Constant

jmohara:
I believe this is RBJ207L
I replaced these on mine. Hard to get but there are some available online if you search.
M

Flyinghorse:
This link shows the bearing - I have a couple on the shelf and can give you a contact.
https://www.acownersclub.co.uk/forum/index.php?topic=1993.msg1993#msg1993

Graham
( no no longer a member but don’t mind helping out a member)

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